The most ideal product of pulse remote transmission water meter is the self-holding switch technology (patent number: 992 19 172.6) successfully developed in 1998. Due to the adoption of dual sensing heads and self-holding switching technology, the accuracy of switching signals reaches 100%. Because the technology adopts the structure above the water meter glass, the problem of anti-magnetic interference is successfully solved.
In 2005, a remote transmission technology with self-holding switch function and measuring reverse flow was successfully tested. This technology completely solves the reading error caused by the inverted water meter and has been widely used.